From: Pavel Machek <pavel@suse.cz>
To: Adam Belay <abelay@novell.com>
Cc: len.brown@intel.com, linux-acpi@vger.kernel.org,
linux-kernel@vger.kernel.org, linux@dominikbrodowski.net,
arjan@linux.intel.com
Subject: Re: [RFC][PATCH 2/2] ACPI: handle timer ticks proactively
Date: Wed, 6 Sep 2006 12:54:15 +0200 [thread overview]
Message-ID: <20060906105415.GG4987@atrey.karlin.mff.cuni.cz> (raw)
In-Reply-To: <1157469360.3420.14.camel@localhost.localdomain>
Hi!
> > > Okay, just to get you some feedback:
> > >
> > > It seems to change things a _lot_. Power consumption with usb modules
> > > loaded went from 14315mW to 13800mW -- that is huge
> > > deal. Unfortunately something strange is going on: with stock kernel,
> > > power consumption is mostly constant. With your patch, it varies a
> > > lot, at 2 second timescale.
> > >
> > > Power consumption with usb unloaded (only way to get reasonable power
> > > on x60) went from stable 10450mW to something rapidly changing, and
> > > probably even worse than original:
> >
> > I also noticed that with your patch, bus master activity tends to be constant?!
>
> Is this the case even when userspace touches the disk? On my hardware I
> see a constant flow of short BM activity bursts.
Disk was active (like once 5 seconds some small access)...
Pavel
--
Thanks, Sharp!
next prev parent reply other threads:[~2006-09-06 10:54 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20060904131027.GD6279@ucw.cz>
2006-09-05 8:28 ` Pavel Machek
2006-09-05 8:53 ` Pavel Machek
2006-09-05 9:03 ` Pavel Machek
2006-09-05 15:16 ` Adam Belay
2006-09-06 10:54 ` Pavel Machek [this message]
2006-08-29 20:51 Adam Belay
2006-10-16 4:59 ` Len Brown
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